Dual camera module and optical device

ABSTRACT

The present embodiment relates to a dual camera module comprising: a substrate; a first image sensor disposed on the substrate; a second image sensor disposed on the substrate while being spaced apart from the first image sensor; a housing disposed on the upper side of the substrate; a first bobbin disposed on the upper side of the first image sensor inside the housing; a second bobbin disposed on the upper side of the second image sensor inside the housing; a first coil disposed in the first bobbin; a second coil disposed in the second bobbin; and a first magnet which is disposed between the first coil and the second coil and faces the first coil and the second coil.

TECHNICAL FIELD

The teachings in accordance with exemplary and non-limiting embodimentsof this invention relate generally to a dual camera module and opticaldevice.

BACKGROUND ART

This section provides background information related to the presentdisclosure, which is not necessarily prior art.

Concomitant with widely generalized dissemination of various mobileterminals and commercialization of wireless Internet services, demandsby consumers related to mobile terminals are diversified to promptvarious types of circumferential devices or additional equipment to bemounted on mobile terminals. Inter alia, camera modules may berepresentative items photographing an object in a still picture or avideo.

Recently, as one kind of camera module, a dual camera module has beendeveloped that is capable of obtaining a high quality photograph orimage through a digital zoom to a short distance subject and even to along distance subject. However, the dual camera module suffers fromdisadvantages/problems in that parts costs are increased and a timeconsumed for manufacturing takes long hours, when two lens driving unitsseparately manufactured to configure a dual camera module are used.Furthermore, the conventional camera module has suffereddisadvantages/problems in that complicated processes are required infixing a magnet and coupling an elastic member, and foreign objects canbe generated during assembly processes.

DETAILED DESCRIPTION OF THE INVENTION Technical Subject

A first exemplary embodiment of the present invention is to provide adual camera module configured to reduce a parts manufacturing cost and amanufacturing loss. Furthermore, the first exemplary embodiment of thepresent invention is to provide an optical device including a dualcamera module.

A second exemplary embodiment of the present invention is to provide alens driving apparatus configured to fix an elastic member using a forcecoupling a magnet to a housing. Furthermore, the second exemplaryembodiment of the present invention is to provide a lens drivingapparatus applied with a foreign object reinforcement structure forprevention of penetration of foreign objects into a housing. Stillfurthermore, an exemplary embodiment of the present invention is toprovide a camera module including a lens driving apparatus and anoptical device.

Technical Solution

In one general aspect of the present invention, there is provided a dualcamera module, comprising: a substrate; a first image sensor disposed onthe substrate; a second image sensor disposed on the substrate whilebeing spaced apart from the first image sensor; a housing disposed abovethe substrate; a first bobbin disposed above the first image sensorinside the housing; a second bobbin disposed above the second imagesensor inside the housing; a first coil disposed on the first bobbin; asecond coil disposed on the second bobbin; and a first magnet disposedbetween the first coil and the second coil and facing the first coil andthe second coil.

Preferably, but not necessarily, the housing may include a partitionwall dividing an inner space of the housing to a first space and asecond space, wherein the first bobbin may be disposed on the firstspace and the second bobbin may be disposed on the second space.

Preferably, but not necessarily, the first magnet may be so arranged asto overlap with the partition wall to an optical axis direction.

Preferably, but not necessarily, the housing may further include a firstmagnet accommodation portion disposed on a bottom side of the partitionwall to accommodate the first magnet, wherein the first magnetaccommodation portion may be of a bottom-opened type.

Preferably, but not necessarily, the dual camera module may furthercomprise: a second magnet disposed on the housing and facing the firstcoil; and a third magnet disposed on the housing and facing the secondcoil, wherein the housing may include a second magnet accommodationportion penetratingly formed at a lateral surface in an inner-outer sideopened type to accommodate the second magnet, and a third magnetaccommodation portion penetratingly formed at a lateral surface in aninner-outer side opened type to accommodate the third magnet.

Preferably, but not necessarily, the dual camera module may furthercomprise: a second magnet disposed on the housing to face the firstmagnet; and a third magnet disposed on the housing to face the secondcoil, wherein the housing may include a second magnet accommodationportion formed at a lateral surface in a bottom side opened type toaccommodate the second magnet, and a third magnet accommodation portionformed at a lateral surface in a bottom side opened type to accommodatethe third magnet.

Preferably, but not necessarily, the dual camera module may furthercomprise a first elastic member coupled to the second bobbin and thehousing, wherein the elastic member is integrally formed.

Preferably, but not necessarily, the dual camera module may furthercomprise a second elastic member coupled to the first bobbin and thehousing; and a third elastic member coupled to the second bobbin and thehousing, wherein the second elastic member is divided to a pair to beelectrically connected to the first coil, and the third elastic memberis divided to a pair to be electrically connected to the second coil.

Preferably, but not necessarily, the dual camera module may furthercomprise a base interposed between the substrate and the housing andintegrally formed, wherein the base includes a first opening portioncorresponding to the first bobbin and a second opening portioncorresponding to the second bobbin.

Preferably, but not necessarily, a bottom surface of the base may beformed with a partition wall interposed between the first openingportion and the second opening portion to protrusively formed to abottom side, wherein the partition wall may be extended from a lateralside of one side of the bottom surface of the base to a lateral side ofthe other side.

Preferably, but not necessarily, the dual camera module may furthercomprise a cover member accommodating the housing at an inside andintegrally formed, wherein the cover member may include a first throughhole corresponding to the first bobbin and a second through holecorresponding to the second bobbin.

Preferably, but not necessarily, an inner lateral surface of the secondmagnet and an inner lateral surface of the third magnet may have amutually different polarity.

Preferably, but not necessarily, the first magnet may includemutually-separated two magnets, and a shield plate shielding anelectromagnetic force may be disposed between the two magnets.

Preferably, but not necessarily, an inner lateral surface of the secondmagnet and an inner lateral surface of the third magnet may have amutually same polarity.

In another genera aspect of the present invention, there is provided anoptical device including a main body, a dual camera module disposed onthe main body to photograph an image of a subject and a display portiondisposed on one surface of the main body to output the imagephotographed by the dual camera module, wherein the dual camera modulecomprise: a substrate; a first image sensor disposed on the substrate; asecond image sensor disposed on the substrate while being spaced apartfrom the first image sensor; a housing disposed on the upper side of thesubstrate; a first bobbin disposed on the upper side of the first imagesensor inside the housing; a second bobbin disposed on the upper side ofthe second image sensor inside the housing; a first coil disposed in thefirst bobbin; a second coil disposed in the second bobbin; and a firstmagnet which is disposed between the first coil and the second coil andfaces the first coil and the second coil.

Advantageous Effects

Parts manufacturing costs and manufacturing losses can be reducedthrough a first exemplary embodiment of the present invention. Themanufacturing processes of lens driving device can be simplified througha second exemplary embodiment of the present invention, and an effect ofreducing manufacturing personnel, jig costs, manufacturing costs anddefects can be expected. Furthermore, generation in and penetration offoreign objects into the lens driving device can be minimized.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view illustrating a camera module according to afirst exemplary embodiment of the present invention.

FIG. 2 is an exploded perspective view illustrating a dual camera moduleaccording to a first exemplary embodiment of the present invention.

FIG. 3 is a plane view illustrating a housing and a first elastic memberof a dual camera module apparatus according to a first exemplaryembodiment of the present invention.

FIG. 4 is a perspective view illustrating a housing and a magnet of adual camera module according to a first exemplary embodiment of thepresent invention.

FIG. 5 is a perspective view of bottom surface illustrating a housing ofa dual camera module according to a first exemplary embodiment of thepresent invention.

FIG. 6 is a perspective view of bottom surface illustrating a housingand a magnet of a dual camera module according to a modification of thepresent invention.

FIG. 7(a) is a plane view illustrating a polarity arrangement of amagnet in a dual camera module according to a first exemplary embodimentof the present invention, and FIG. 7(b) is illustrating a polarityarrangement of a magnet in a dual camera module according to amodification of the present invention.

FIG. 8 is a perspective view illustrating a bobbin, a coil and anelastic member of a dual camera module according to a first exemplaryembodiment of the present invention.

FIG. 9 is a bottom view illustrating a bobbin and an elastic member of adual camera module according to a first exemplary embodiment of thepresent invention.

FIG. 10 is a perspective view of bottom surface illustrating a dualcamera module according to a first exemplary embodiment of the presentinvention.

FIG. 11 is a perspective view illustrating a lens driving deviceaccording to a second exemplary embodiment of the present invention.

FIG. 12 is an exploded perspective view illustrating a lens drivingdevice according to a second exemplary embodiment of the presentinvention.

FIG. 13 is a cross-sectional view illustrating a lens driving deviceaccording to a second exemplary embodiment of the present invention.

FIG. 14 is a plane view illustrating some elements of lens drivingdevice according to a second exemplary embodiment of the presentinvention.

FIG. 15 is a perspective view of bottom surface illustrating a housingof a lens driving device according to a second exemplary embodiment ofthe present invention.

FIG. 16 is a bottom view illustrating some elements of a lens drivingdevice according to a second exemplary embodiment of the presentinvention.

FIG. 17 is a plane view illustrating an upper support member accordingto a modification of the present invention.

FIG. 18 is a perspective view illustrating some elements of a lensdriving device according to a second exemplary embodiment of the presentinvention.

FIG. 19 is a cross-sectional view taken along line A1-A2 of FIG. 18.

FIG. 20 is a plane view illustrating some elements of a lens drivingdevice according to a second exemplary embodiment of the presentinvention.

FIG. 21 is a bottom view illustrating some elements of a lens drivingdevice according to a second exemplary embodiment of the presentinvention.

FIG. 22 is an exploded perspective view illustrating a lens drivingdevice according to a modification of the present invention.

FIG. 23 is a perspective view of bottom surface illustrating an assemblyprocess of upper support member and a second driving portion of a lensdriving device according to a modification of the present invention.

BEST MODE

Now, some of the exemplary embodiments of the present invention will bedescribed with the accompanying drawings.

Detailed descriptions of well-known functions, configurations orconstructions are omitted for brevity and clarity so as not to obscurethe description of the present disclosure with unnecessary detail.Furthermore, throughout the descriptions, the same reference numeralswill be assigned to the same elements in the explanations of thefigures.

Furthermore, the terms “first,” “second,” “A”, “B”, (a), (b) and thelike, herein do not denote any order, quantity, or importance, butrather are used to distinguish one element from another. In thefollowing description and/or claims, the terms coupled and/or connected,along with their derivatives, may be used. In particular embodiments,connected may be used to indicate that two or more elements are indirect physical and/or electrical contact with each other. “Coupled” maymean that two or more elements are in direct physical and/or electricalcontact. However, coupled may also mean that two or more elements maynot be in direct contact with each other, but yet may still cooperateand/or interact with each other. For example, “coupled”, “joined” and“connected” may mean that two or more elements do not contact each otherbut are indirectly joined together via another element or intermediateelements.

An “optical axis direction” as used hereinafter may be defined as anoptical axis direction of a lens module in a state of being coupled to alens driving unit. Meantime, “optical axis direction” may beinterchangeably used with a vertical direction and z axis direction.

An “auto focus function” as used hereinafter may be defined as afunction of matching a focus relative to a subject by adjusting adistance from an image sensor by moving a lens module to an optical axisdirection in response to a distance to a subject in order to obtain aclear image of a subject on an image sensor. Hereinafter, the “autofocus” may be interchangeably used with “AF”.

A “handshake correction function” as used hereinafter may be defined asa function of moving or tilting a lens module to a directionperpendicular to an optical axis direction in order to offset vibration(movement) generated on the image sensor by an external force. Meantime,the “handshake correction” may be interchangeably used with an “OIS(Optical Image Stabilization)”.

A lens driving device (1000) according to a second exemplary embodimentof the present invention may be applied to a dual camera moduleaccording to a first exemplary embodiment of the present invention. Tobe more specific, arrangement in parallel of two lens driving devices(1000) on a PCB (Printed Circuit Board) according to a second exemplaryembodiment of the present invention may be applied to a dual cameramodule according to a first exemplary embodiment of the presentinvention.

Now, a configuration of an optical device according to a first exemplaryembodiment of the present invention will be described hereinafter.

The optical device according to the exemplary embodiment of the presentinvention may be a hand phone, a mobile phone, a smart phone, a portablesmart device, a digital camera, a notebook computer (laptop computer), aPMP (Portable Multimedia Player) and a navigation device. However, thepresent invention is not limited thereto, and any device may be calledan optical device capable of photographing an image or a photograph.

The optical device may include a main body (not shown), a dual cameramodule and a display portion (not shown). However, any one or more ofthe main body, the dual camera module and the display portion may beomitted or changed from the optical device. The main body may form anexternal look of the optical device. For example, the main body mayinclude a cubic shape. In another example, the main body may be formedat least at some areas with a round shape. The main body may accommodatea dual camera module. One surface of the main body may be disposed witha display portion. For example, one surface of the main body may bedisposed with a display portion and camera module, and the other surface(opposite surface of the one surface) of the main body may beadditionally disposed with a dual camera module.

The dual camera module may be disposed on the main body. The dual cameramodule may be disposed on one surface of the main body. At least a partof the dual camera module may be accommodated into the main body. Thedual camera module may be formed in a plural number. Alternatively, adual camera module and a camera module (camera module with one imagesensor) may be integrally formed. For example, a camera module may bedisposed on a front surface of the main body and a dual camera modulemay be disposed on a rear surface of the main body. The plurality ofcamera modules may be respectively disposed on one surface of the mainbody and the other surface of the main body. The dual camera module canphotograph an image of a subject.

The display portion may be disposed on the main body. The displayportion may be disposed on one surface of the main body. That is, thedisplay portion may be disposed on the same surface as that of the dualcamera module. Alternatively, the display portion may be disposed on theother surface of the main body. The display portion may be disposed on asurface of a main body opposite to a surface where the dual cameramodule is disposed. The display portion may output an image photographedby the dual camera module.

Hereinafter, a configuration of a dual camera module according to afirst exemplary embodiment of the present invention will be described.

FIG. 1 is a perspective view illustrating a camera module according to afirst exemplary embodiment of the present invention, FIG. 2 is anexploded perspective view illustrating a dual camera module according toa first exemplary embodiment of the present invention, FIG. 3 is a planeview illustrating a housing and a first elastic member of a dual cameramodule apparatus according to a first exemplary embodiment of thepresent invention, FIG. 4 is a perspective view illustrating a housingand a magnet of a dual camera module according to a first exemplaryembodiment of the present invention, FIG. 5 is a perspective view ofbottom surface illustrating a housing of a dual camera module accordingto a first exemplary embodiment of the present invention, FIG. 6 is aperspective view of bottom surface illustrating a housing and a magnetof a dual camera module according to a modification of the presentinvention, FIG. 7(a) is a plane view illustrating a polarity arrangementof a magnet in a dual camera module according to a first exemplaryembodiment of the present invention, and FIG. 7(b) is illustrating apolarity arrangement of a magnet in a dual camera module according to amodification of the present invention, FIG. 8 is a perspective viewillustrating a bobbin, a coil and an elastic member of a dual cameramodule according to a first exemplary embodiment of the presentinvention, FIG. 9 is a bottom view illustrating a bobbin and an elasticmember of a dual camera module according to a first exemplary embodimentof the present invention, and FIG. 10 is a perspective view of bottomsurface illustrating a dual camera module according to a first exemplaryembodiment of the present invention.

The dual camera module may include a cover member (100), bobbins (210,220), a housing (300), coils (410, 420), a magnet (500), a base (600)and elastic members (710, 720, 730). However, any one or more of thecover member (100), the bobbins (210, 220), the housing (300), the coils(410, 420), the magnet (500), the base (600) and the elastic members(710, 720, 730) may be omitted or changed from the dual camera module.

The cover member (100) may be accommodated into an inside of the housing(300). The cover member (100) may accommodate, at an inside thereof,bobbins (210, 220), the housing (300), the coils (410, 420), the magnet(500) and the elastic members (710, 720, 730) to protect these elementsfrom an external shock. The cover member (100) may be manufactured witha metal material to shield an EMI (Electromagnetic Interference). Thecover member (100) may take a bottom-opened cubic shape. However, thepresent invention is not limited thereto. The cover member (100) may beintegrally formed. In this case, the cover member (100) may beadvantageous over being manufactured in two separate pieces in terms ofmanufacturing costs.

The cover member (100) may include an upper plate (101), and a bottomplate (102). The cover member (100) may include an upper plate (101) anda lateral plate (102) extended downwards from a corner of the upperplate (101). The upper plate (101) may be disposed with a first throughhole (110) and a second through hole (120). A bottom end of the lateralplate (102) may be coupled by the base (600).

The cover member (100) may include a first through hole (110) and asecond through hole (120). The cover member (100) may include a firstthrough hole (110) corresponding to the first bobbin (210) and a secondthrough hole (120) corresponding to the second bobbin (220). The firstthrough hole (110) may be so formed as to correspond to the first bobbin(210). The first through hole (110) may be formed at a positioncorresponding to that of the first bobbin (210). The first through hole(110) may be so formed as to have a size corresponding to that of thefirst bobbin (210). The light having passed the first through hole (110)may be introduced into a lens module (not shown) coupled to the firstbobbin (210). The second through hole (120) may be so formed as tocorrespond to the second bobbin (220). The second through hole (120) maybe formed at a position corresponding to that of the second bobbin(220). The second through hole (120) may be so formed as to have a sizecorresponding to that of the second bobbin (220). The light havingpassed the second through hole (120) may be introduced into a lensmodule (not shown) coupled to the second bobbin (220).

The bobbin (210, 220) may include a first bobbin (210) and a secondbobbin (220). The first bobbin (210) and the second bobbin (220) mayindependently move by being coupled to each lens module.

The first bobbin (210) and the second bobbin (220) may be disposed onpositions mutually different vertical heights. That is, an EFL(Effective Focal Length) of the first bobbin (210) may be different fromthat of the second bobbin (220). Through this structure, the dual cameraaccording to a first exemplary embodiment of the present invention canimplement a digital zooming performance. Meantime, the first and secondbobbins (210, 220) may accommodate lenses, each having a differentdiameter. In this case, the first and second bobbins (210, 220) may havea mutually different diameter.

The first bobbin (210) may be moveably arranged in a first space (301).The first bobbin (210) may be moveably arranged relative to the housing(300) by the first and second elastic members (710, 720) thatelastically connect the first bobbin (210) and the housing (300). Thefirst bobbin (210) may be disposed with a first coil (410), and when apower is applied to the first coil (410), the first bobbin (210) may bemoved by electromagnetic interaction between the first coil (410) andmagnet (500). That is, the first bobbin (210) may move to an opticalaxis to implement the auto focusing function.

The first bobbin (210) may include a lens receptor (211). The firstbobbin (210) may include at an inside an upper-bottom opened lensreceptor (211). The lens receptor (211) may be accommodated with thelens module. The lens receptor (211) may be formed with screw threads,for example. In this case, the screw threads of lens receptor (211) maybe coupled with those formed at an external circumferential surface ofthe lens module. However, the present invention is not limited thereto.For example, the lens receptor (211) and the lens module may be coupledand fixed using an adhesive.

The second bobbin (220) may be moveably arranged in a second space(302). The second bobbin (220) may be moveably arranged relative to thehousing (300) by the first and third elastic members (710, 730) thatelastically connect the second bobbin (220) and the housing (300). Thesecond bobbin (220) may be disposed with a second coil (420), and when apower is applied to the second coil (420), the second bobbin (220) maybe moved by electromagnetic interaction between the second coil (420)and magnet (500). That is, the second bobbin (220) may move to anoptical axis to implement the auto focusing function.

The second bobbin (220) may include a lens receptor (221). The secondbobbin (220) may include at an inside an upper-bottom opened lensreceptor (221). The lens receptor (221) may be accommodated with thelens module. The lens receptor (221) may be formed with screw threads,for example. In this case, the screw threads of lens receptor (221) maybe coupled with those formed at an external circumferential surface ofthe lens module. However, the present invention is not limited thereto.For example, the lens receptor (221) and the lens module may be coupledand fixed using an adhesive.

The housing (300) may be formed with an inner space that is divided to afirst space (301) and a second space (302) formed by a partition wall(310). The housing (300) may accommodate at an inside a first bobbin(210) and a second bobbin (220). The first space (301) may be disposedwith the first bobbin (210). The second space (302) may be disposed withthe second bobbin (220). The housing (300) may be formed with a size anda shape corresponding to those of the cover member (100). The housing(300) may be opened at an upper side and a bottom side. However, thepresent invention is not limited thereto. The housing (300) according toa first exemplary embodiment of the present invention may be called a“yoke” as a member fixing the magnet (500). Meantime, although the firstexemplary embodiment of the present invention has explained andillustrated the housing (300) as a fixing member, the housing, as amodification, may be moved or tilted to a direction perpendicular to theoptical axis to implement a handshake correction function.

The housing (300) may include a partition wall (310) and a lateral wall(320). The housing (300) may include a lateral wall (320) and apartition wall (310) that connects two opposite lateral walls (320). Thehousing (300) may include a first magnet receptor (330), a second magnetreceptor (340) and a third magnet receptor (350). The housing (300) mayinclude a first magnet receptor (330) disposed on a bottom side of thepartition wall (310) to accommodate a first magnet (510). The housing(300) may include a second magnet receptor (340) formed on the lateralwall (320) in an inside/outside opened shape to accommodate a secondmagnet (520) facing the first coil (410). The housing (300) may includea third magnet receptor (350) formed on the lateral wall (320) in aninside/outside opened shape to accommodate a third magnet (530) facingthe second coil (420). The housing (300) may include a spacer (360)protrusively formed from an upper surface of the lateral wall (320) toan upper side.

The partition wall (310) may be formed at a partial area between thefirst space (301) and the second space (302), which is an inner space ofthe housing (300). The height of the partition wall (310) may be lowerthan that of the housing (300). The partition wall (310) may be disposedon an upper surface of the housing (300) and the first magnet receptor(330) may be disposed on a bottom surface of the housing (300). That is,the partition wall (310) may be disposed above the first magnet receptor(330). At this time, the first magnet receptor (330) may be a bottomside-opened groove, and the first magnet (510) may be insertedlydisposed on a bottom side of the first magnet receptor (330).Alternatively, the partition wall may be disposed on a bottom surface ofthe housing (300), and the first magnet receptor (330) may be disposedon an upper surface of the housing (300). That is, the partition wall(310) may be disposed on a bottom side of the first magnet receptor(330). At this time, the first magnet receptor (330) may be an upperside-opened groove, and the first magnet (510) may be insertedlydisposed above the first magnet receptor (330). Alternatively the firstmagnet receptor (330) may be formed as a through hole on the partitionwall (310). At this time, the first magnet (510) may be inserted anddisposed on a lateral side of the first magnet receptor (330).

The partition wall (310) may connect two lateral walls, each lateralwall facing the other lateral wall. The partition wall (310) may dividean inner space of the housing (300) to a first space (301) and a secondspace (302). The partition wall (310) may divide the first space (301)and the second space (302) in an equal size, and may also divide thefirst space (301) and the second space (302) in a different size. Thepartition wall (310) may be integrally formed with the lateral wall(320) of housing (300). The housing (300) may be omitted with thepartition wall (310) and may be instead formed with a through hole. Inthis case, the first magnet (510) may be disposed on the through hole todivide the first space (301) and the second space (302). That is, thepartition wall (310) may be omitted to allow the first magnet (510) tofunction as a partition wall (310). In this case, a height of the firstmagnet (510) may correspond to that of the housing (300).

The lateral wall (320) may form an exterior look of the housing (300).The lateral wall (320) may be so formed as to correspond to the covermember (100). The lateral wall (320) may be formed in a shape and a sizethat correspond to those of the cover member (100). The lateral wall(320) may be formed in 4 pieces, for example, and facing two lateralwalls (320) may be symmetrically formed. The two adjacent lateral walls(320) among the 4 lateral walls (320) may have a different size, wherethe size of larger lateral wall (320) may be double the size of thesmaller lateral wall (320). However, the present invention is notlimited thereto.

The first magnet receptor (330) can accommodate the first magnet (510).The first magnet receptor (330) may be a bottom-opened groove, throughwhich the first magnet (510) can be assembled to a bottom side of thefirst magnet receptor (330) in the manufacturing process. The firstmagnet receptor (330) may be disposed on a bottom side of the partitionwall (310). At least one portion of the first magnet receptor (330) maybe formed with a groove corresponding to the first magnet (510) in termsof shape, to thereby support the first magnet (510) lest the firstmagnet (510) be disengaged. The first magnet receptor (330) and thefirst magnet (510) may be coupled by an adhesive. In a modification, thefirst magnet receptor (330) may be an upper-bottom opened through hole.That is, the partition wall (310) may be omitted. In this case, thefirst magnet (510) may be slid and inserted into the first magnetreceptor (330) from an upper side or a bottom side. At this time, thehousing (300) may be formed with a structure fixing the first magnet(510).

The second magnet receptor (340) may accommodate the second magnet(520). The second magnet receptor (340) may be of a bottom-opened typeas illustrated in FIG. 6. In this case, the second magnet (520) can beassembled from a bottom side to the second magnet receptor (340) in themanufacturing process. At least one portion of the second magnetreceptor (340) may be formed with a groove corresponding to the secondmagnet (520) in terms of shape, to thereby support the second magnet(520) lest the second magnet (520) be disengaged. The second magnetreceptor (340) and the second magnet (520) may be coupled by anadhesive.

The third magnet receptor (350) may accommodate the third magnet (530).The third magnet receptor (350) may be of an inside/outside-opened typeas illustrated in FIG. 5. In this case, the third magnet (530) can beassembled from a lateral side to the third magnet receptor (350) in themanufacturing process. The third magnet receptor (350) may be of abottom-opened type as a modification as illustrated in FIG. 6. In thiscase, the third magnet (530) may be assembled from a bottom side to thethird magnet receptor (350) in the manufacturing process. At least oneportion of the third magnet receptor (350) may be formed with a groovecorresponding to the third magnet (530) in terms of shape, to therebysupport the third magnet (530) lest the third magnet (530) bedisengaged. The third magnet receptor (350) and the third magnet (530)may be coupled by an adhesive.

The spacer (360) may be protrusively and upwardly formed from an uppersurface of the lateral wall (320) at the housing (300). The spacer (360)may be so formed as to secure an upper moving space of the bobbin (210,220) coupled to the first elastic member (710). That is, the spacer(360) can separate an upper surface of the lateral wall (320) at thehousing (300) from an inner surface of upper plate (101) at the covermember (100). That is, a discrete space between the upper surface of thelateral wall (320) at the housing (300) and the inner surface of theupper plate (101) at the cover member (100) may be used as a movablespace of the first elastic member (710) and the bobbin (210, 220).

The coil (410, 420) may include a first coil (410) and a second coil(420). The coil (410, 420) may take a shape wound on an externalcircumferential surface of the bobbin (210, 220), for example.Furthermore, the coil (410, 420) may be disposed on an externalcircumferential surface of the bobbin (210, 220) in a coil block shape,as a modification. The first coil (410) and the second coil (420) mayreceive a separate power.

The first coil (410) may be disposed on the first bobbin (210). Thefirst coil (410) may be disposed on an external circumferential surfaceof the first bobbin (210). The first coil (410) may face the firstmagnet (510) and the second magnet (520), through which, when a power isapplied to the first coil (410), the first coil (410) may be moved byelectromagnetic interaction between the first coil (410) and the firstand second magnets (510, 520). At this time, the first bobbin (210) mayalso move along with the first coil (410). The first coil (410) mayreceive a power through the second elastic member (720). However, thepresent invention is not limited thereto, and the first coil (410) mayalso receive the power from the first elastic member (710). In thiscase, the first elastic member (710) may be formed by being separated tomore than two pieces.

The first coil (420) may be disposed on the second bobbin (220). Thesecond coil (420) may be disposed on an external circumferential surfaceof the second bobbin (220). The second coil (420) may face the firstmagnet (510) and the third magnet (530), through which, when a power isapplied to the second coil (420), the second coil (420) may be moved byelectromagnetic interaction between the second coil (420) and the firstand third magnets (510, 530). At this time, the second bobbin (220) mayalso move along with the second coil (420). The second coil (420) mayreceive a power through the third elastic member (730). However, thepresent invention is not limited thereto, and the second coil (420) mayalso receive the power from the second elastic member (720). In thiscase, the second elastic member (720) may be formed by being separatedto more than two pieces.

The magnet (500) may be disposed on the housing (300). However, themagnet (500) may be also disposed on the bobbin (210, 220) and the coil(410, 420) may be also disposed on the housing (300). The magnet (500)may move the coil (410, 420) through electromagnetic interaction withthe coil (410, 420). However, when the coil (410, 420) is disposed onthe housing (300) and the magnet (500) is disposed on the bobbin (210,220), the magnet (500) can be moved. The magnet (500) may be a flatmagnet. However, the present invention is not limited thereto.

The first magnet (510) may be disposed on the first magnet receptor(330). The first magnet (510) may be disposed on a bottom side of thepartition wall (310). The first magnet (510) may be coupled to a bottomside of the first magnet receptor (330). As a modification, thepartition wall (310) may be omitted from the housing (300), and thefirst magnet (510) may be disposed with a size corresponding to a heightof the housing (300). The first magnet (510) may commonly interact tothe first coil (410) and the second coil (420). That is, the firstmagnet (510) may face both the first coil (410) and the second coil(420). The first magnet (510) may take a flat rectangular shape.However, the present invention is not limited thereto. The first magnet(510) may be formed to be thicker than the second magnet (520) and thethird magnet (530).

The first magnet (510) may be integrally formed. As a modification, thefirst magnet (510) may be formed with a magnet separated to 2 (two)pieces. A shield plate (not shown) may be disposed between the twoseparated magnets. The shield plate can remove a phenomenon where theelectromagnetic interaction with the first coil (410) and theelectromagnetic interaction with the second coil mutually affect. Thatis, the shield plate may be disposed between the first space (301) andthe second space (302) to remove the phenomenon where theelectromagnetic force of the first space (301) affects the second space(302) or the electromagnetic force of the second space (302) affects thefirst space (301). The shield plate may take a flap shape. However, thepresent invention is not limited thereto, any shape capable of shieldingthe electromagnetic force will be sufficient. The shield plate may be ashield sheet or a shield metal plate. The shield plate may be formedwith a metal. However, the present invention is not limited thereto. Theshield plate may be coupled to at least one piece of magnet that isseparated to two pieces. At this time, the shield plate and the magnetmay be coupled by bonding.

The second magnet (520) may be disposed on the second magnet receptor(340). The second magnet (520) may be disposed on the lateral wall (320)of the housing (300). The second magnet (520) may be coupled at alateral side of the second magnet receptor (340), for example. Thesecond magnet (520) may be coupled to a bottom side of the second magnetreceptor (340) as a modification. The second magnet (520) may take aflat rectangular shape. The second magnet (520) may be formed in threepieces, for example, but the present invention is not limited thereto.

The third magnet (530) may be disposed on the third magnet receptor(350). The third magnet (530) may be disposed on the lateral wall (320)of the housing (300). The third magnet (530) may be coupled at a lateralside of the third magnet receptor (350), for example. The third magnet(530) may be coupled to a bottom side of the third magnet receptor (350)as a modification. The third magnet (530) may take a flat rectangularshape. The third magnet (530) may be formed in three pieces, forexample, but the present invention is not limited thereto.

An inner surface of the second magnet (520) and an inner surface of thethird magnet (530) may have a mutually different polarity, asillustrated in FIG. 7. For example, the inner surface of the secondmagnet (520) may have an N pole while the inner surface of the thirdmagnet (530) may have an S pole. At this time, a lateral surface at asecond magnet (520) side of the first magnet (510) may have an N pole,while a lateral surface at a third magnet (530) side of the first magnet(510) may have an S pole. Conversely, an inner surface of the secondmagnet (520) may have an S pole while an inner surface of the thirdmagnet (530) may have an N pole. At this time, a lateral surface at asecond magnet (520) side of the first magnet (510) may have an S pole,while a lateral surface at a third magnet (530) side of the first magnet(510) may have an N pole. In a modification, when the first magnet (510)is formed with two magnets by being separated, both the first space(301) side and the second space (302) side may be arranged with N polesat each inner side thereof. Alternatively, both the first space (301)side and the second space (302) side may be arranged with S poles ateach inner side thereof.

The magnet (500) may be disposed with one first magnet (510), threesecond magnets (520) and three third magnet (530), as illustrated inFIG. 7 (a). Alternatively, the magnet (500) may be arranged, as amodification, with one first magnet (510), one second magnet (520) andone third magnet (530) as illustrated in FIG. 7(b). However, the presentinvention is not limited thereto.

The base (600) may support the housing (300) at a bottom side. The base

(300) may be coupled to a bottom end of the lateral plate (102) of thecover member (100). An inner space formed by coupling between the base(300) and the cover member (100) may be disposed with such elements asthe bobbin (210, 220) and the housing (300) and the like. The base (600)may be disposed on a bottom side with a PCB (Printed Circuit Board). Anupper surface of the PCB disposed on a bottom side of the (600) may bemounted with an image sensor (not shown). At this time, the number ofimage sensors may be 2 pieces, which is the same as the number of bobbin(210, 220), through which a light introduced through a lens modulerespectively coupled to the first bobbin (210) and the second bobbin(220) can be obtained by each image sensor. In this case, an imagesensor at a first bobbin (210) side may be called a first image sensor(not shown), and an image sensor at a second bobbin (220) side may becalled a second image sensor (not shown).

The base (600) may include a separation wall (630) interposed betweenthe first image sensor and the second image sensor so that a lightintroduced through the lens module coupled to the first bobbin (210) canbe reached only to the first image sensor while the light is not allowedto reach the second image sensor. That is, the base (600) may includethe separation wall (630) disposed between the first image sensor andthe second image sensor so that a light introduced through the lensmodule coupled to the second bobbin (220) can reach only the secondimage sensor while the light is not allowed to reach the first imagesensor.

The base (600) may include a first opening (610) corresponding to thefirst bobbin (210) and a second opening (620) corresponding to thesecond bobbin (220). The first opening (610) may be formed to face thefirst bobbin (210). The first opening (610) may be formed at a positioncorresponding to that of the first bobbin (210). The first opening (610)may be formed with a size corresponding to that of the first bobbin(210), through which a light introduced through the lens module coupledto the first bobbin (210) can reach the first image sensor, and thelight introduced through the lens module coupled to the second bobbin(220) can reach the second image sensor.

The base (600) may be arranged at a bottom surface with a separationwall (630) interposed between the first opening (610) and the secondopening (620) and protrusively formed toward a bottom side. Theseparation wall (630) may be extended from a corner of one side of thebottom surface at the base (600) to a corner of the other side at thebase (600). Through this configuration, a light having passed the lensmodule coupled to the first bobbin (210) and a light having passed thelens module coupled to the second bobbin (220) may be prevented frombeing mutually interfered or affecting the image sensor at the otherside.

A lug (640) may be protrusively formed with a same height as that of theseparation wall (630) by circumventing an external circumferentialsurface at the bottom surface of the base (600). A bottom surface of thelug (640) and the PCB may be coupled by being directly contactedthereto. However, a separate member may be interposed between the base(600) and the PCB.

The elastic member (710, 720, 730) may elastically couple the bobbin(210, 220) with the housing (300). The elastic member (710, 720, 730)may movably support the bobbin (210, 220) relative to the housing (300).The elastic member (710, 720, 730) may be a leaf spring, for example,but there is no limitation thereto.

The first elastic member (710) may be integrally formed. When the firstelastic member (710) coupled to both the first bobbin (210) and thesecond bobbin (220) is integrally manufactured as illustrated in thefirst exemplary embodiment of the present invention, the first elasticmember (710) can be manufactured with one etching form, which isadvantageous in terms of manufacturing cost. However, in order to add anauto focusing feedback function to a dual camera module according thefirst exemplary embodiment of the present invention, many moreconductive lines are required, such that the first elastic member (710)may be separably disposed to allow being used as conductive lines.

The first elastic member (710) may be coupled to the second bobbin (220)and the housing (300). The first elastic member (710) may be coupled toan upper surface of first bobbin (210), an upper surface of secondbobbin (220) and an upper surface of housing (300). The first bobbin(210) and the second bobbin (220) coupled to the first elastic member(710) may independently move therebetween.

The first elastic member (710) may include an external portion (711), afirst internal portion (712), a first connection portion (713), a secondinternal portion (714) and a second portion (715). The first elasticmember (710) may include an external portion (711) coupled to an uppersurface of the housing (300), a first internal portion (712) coupled toan upper surface of first bobbin (210), a first connection portion (713)connecting the external portion (711) and the first internal portion(712), a second internal portion (714) coupled to an upper surface ofsecond bobbin (220) and a second connection portion (715) connecting theexternal portion (711) and the second internal portion (714).

The second elastic member (720) may be coupled to the first bobbin (210)and the housing (300). The second elastic member (720) may be coupled toa bottom surface of first bobbin (210) and to a bottom surface of thehousing (300). The second elastic member (720) may be divided to a pairto be electrically connected to the first coil (410). The second elasticmember (720) may include a first conductive portion (720 a) and a secondconductive portion (720 b), each arranged in a symmetrical formationfrom the other. The second elastic member (720) may provide a power tothe first coil (410) by being electrically connected to an outside powersource and providing the supplied power to the first coil (410). Thesecond elastic member (720) may include an external portion (721), aninternal portion (722) and a connection portion (723). The secondelastic member (720) may include an external portion (721) coupled to abottom surface of housing (300), an internal portion (722) coupled to abottom surface of the first bobbin (210), and a connection portion (723)connecting the external portion (721) and the internal portion (722).

The third elastic member (730) may be coupled to the second bobbin (220)and the housing (300). The third elastic member (730) may be coupled toa bottom surface of second bobbin (220) and to a bottom surface of thehousing (300). The third elastic member (730) may be divided to a pairto be electrically connected to the second coil (420). The third elasticmember (730) may include a third conductive portion (730 a) and a fourthconductive portion (730 b), each arranged in a symmetrical formationfrom the other. The third elastic member (730) may provide a power tothe second coil (420) by being electrically connected to an outsidepower source and providing the supplied power to the second coil (420).The third elastic member (730) may include an external portion (731), aninternal portion (732) and a connection portion (733). The third elasticmember (730) may include an external portion (731) coupled to a bottomsurface of housing (300), an internal portion (732) coupled to a bottomsurface of the second bobbin (220), and a connection portion (733)connecting the external portion (731) and the internal portion (732).

Hereinafter, operation of dual camera module according to a firstexemplary embodiment will be described.

When the first coil (410) coupled to the first bobbin (210) of dualcamera module according to the first exemplary embodiment of the presentinvention is provided a power through the second elastic member (720),the first bobbin (210) may move to an optical axis direction to performan auto focusing function. Furthermore, when a power5 is supplied to thesecond coil (420) coupled to the second bobbin (220) through the thirdelastic member (730), the second bobbin (220) may move to an opticalaxis direction to perform an auto focusing function. That is, the firstbobbin (210) and the second bobbin (220) may be independently driven.

The dual camera module according to a first exemplary embodiment of thepresent invention may include a first bobbin (210) and a second bobbin(220). The first bobbin (210) and the second bobbin (220) may be coupledwith a lens module respectively. At this time, the first bobbin (210)may provide a narrow view angle over the second bobbin (220), and thesecond bobbin (220) may provide a broader view angle than the firstbobbin (210). That is, the lens module of first bobbin (210) mayfunction as a telephoto lens, while the lens module of second bobbin(220) may function as a wide-angle lens.

A lens module of first bobbin (210) at the dual camera module accordingto a first exemplary embodiment of the present invention and a lensmodule of second bobbin (220) can provide a digital zooming functionwhile optical axes are realized of being aligned. The dual camera moduleaccording to the first exemplary embodiment of the present invention mayoutput an image obtained through the lens module of second bobbin (220)when a user photographs an object of proximate distance, and output animage obtained through the lens module of first bobbin (210) when a userphotographs an object of long distance. Furthermore, the dual cameramodule according to the first exemplary embodiment of the presentinvention may output an image by combining an image obtained by the lensmodule of first bobbin (210) based on a distance to an object and animage obtained by the lens module of second bobbin (220). That is, thedual camera module according to the first exemplary embodiment of thepresent invention can obtain subjects both in near distances and longdistances by clear quality of images.

Hereinafter, configuration of optical device according to a secondexemplary embodiment of the present invention will be described.

The optical device may be a hand phone, a mobile phone, a smart phone, aportable smart device, a digital camera, a notebook computer (laptopcomputer), a PMP (Portable Multimedia Player) and a navigation device.However, the present invention is not limited thereto, and any devicemay be called an optical device capable of photographing an image or aphotograph.

The optical device may include a main body (not shown), a displayportion (not shown) disposed on the main body to display information,and a camera (not shown) disposed on the main body to photograph animage of a photograph, and having a camera module (not shown).

Now, hereinafter, configuration of camera module according to a secondexemplary embodiment of the present invention will be described.

The camera module may include a lens driving apparatus (1000), a lensmodule (not shown), an IR (Infrared cut-off filter (not shown), a PCB(Printed Circuit Board, not shown), an image sensor (not shown) and acontroller (not shown). However, any one or more of the lens drivingapparatus (1000), the lens module (not shown), the IR cut-off filter,the PCB, the image sensor and the controller may be omitted or changed.

The lens module may include one or more lenses (not shown) and a lensbarrel accommodating one or more lenses. However, one element of thelens module is not limited by the lens barrel, and any holder structurecapable of supporting one or more lenses will suffice. The lens modulemay move along with the lens driving apparatus (1000) by being coupledto the lens driving apparatus (1000). The lens module may be coupled toan inside of the lens driving apparatus (1000), for example. The lensmodule may be screw-coupled with a lens driving apparatus (1000), forexample. The lens module may be coupled to the lens driving apparatus(1000) using an adhesive, for example. Meantime, a light having passedthe lens module may be irradiated on an image sensor.

The infrared cut-off filter may serve to prevent a light of infrared rayregion from entering an image sensor. The infrared cut-off filter may beinterposed between the lens module and the image sensor, for example.The infrared cut-off filter may be disposed on a holder member (notshown) separately disposed from a base (1600). However, the infraredcut-off filter may be installed at a hollow hole (1611) formed at acenter of a base (1600). The infrared cut-off filter may be formed witha film material or a glass material, for example. Meantime, the infraredcut-off filter may be formed by allowing an infrared cut-off coatingmaterial to be coated on a plate-shaped optical filter such as animaging plane protection cover glass or a cover glass, for example.

A PCB (Printed Circuit Board) may support the lens driving apparatus(1600). The PCB may be mounted with an image sensor. For example, anupper inner side of the PCB may be disposed with an image sensor, and anupper outside of the PCB may be disposed with a sensor holder (notshown). An upper side of the sensor holder may be disposed with the lensdriving apparatus (1000). Alternatively, an upper outside of the PCB maybe disposed with the lens driving apparatus (1000), and an upper innerside of the PCB may be disposed with an image sensor. Through thisstructure, a light having passed the lens module accommodated inside thelens driving apparatus (1000) may be irradiated onto the image sensormounted on the PCB. The PCB may supply a power to the lens drivingapparatus (1000). Meantime, the PCB may be disposed with a controller inorder to control the lens driving apparatus (1000).

The image sensor may be mounted on the PCB. The image sensor may be sodisposed as to match the lens module in terms of optical axis, throughwhich the image sensor can obtain a light having passed the lens module.The image sensor may output the irradiated light as an image. The imagesensor may be a CCD (charge coupled device), an MOS (metal oxidesemi-conductor), a CPD and a CID, for example. However, the types ofimage sensor are not limited thereto.

The controller may be mounted on a PCB. The controller may be disposedon an outside of the lens driving apparatus (1000). However, thecontroller may be also disposed on an inside of the lens drivingapparatus (1000). The controller may control a direction, intensity andan amplitude of a current supplied to each element of lens drivingapparatus (1000). The controller may perform any one of an AF functionand an OIS function of the camera module by controlling the lens drivingapparatus (1000). That is, the controller may move the lens module to anoptical axis direction or tile the lens module to a direction orthogonalto the optical axis direction by controlling the lens driving apparatus(1000). Furthermore, the controller may perform a feedback control of AFfunction and OIS function.

Hereinafter, configuration of lens driving apparatus (1000) according toa second exemplary embodiment of the present invention will be describedin detail with reference to the accompanying drawings.

FIG. 11 is a perspective view illustrating a lens driving deviceaccording to a second exemplary embodiment of the present invention,FIG. 12 is an exploded perspective view illustrating a lens drivingdevice according to a second exemplary embodiment of the presentinvention, FIG. 13 is a cross-sectional view illustrating a lens drivingdevice according to a second exemplary embodiment of the presentinvention, FIG. 14 is a plane view illustrating some elements of lensdriving device according to a second exemplary embodiment of the presentinvention, FIG. 15 is a perspective view of bottom surface illustratinga housing of a lens driving device according to a second exemplaryembodiment of the present invention, FIG. 16 is a bottom viewillustrating some elements of a lens driving device according to asecond exemplary embodiment of the present invention, FIG. 17 is a planeview illustrating an upper support member according to a modification ofthe present invention, FIG. 18 is a perspective view illustrating someelements of a lens driving device according to a second exemplaryembodiment of the present invention, FIG. 19 is a cross-sectional viewtaken along line A1-A2 of FIG. 18, FIG. 20 is a plane view illustratingsome elements of a lens driving device according to a second exemplaryembodiment of the present invention, FIG. 21 is a bottom viewillustrating some elements of a lens driving device according to asecond exemplary embodiment of the present invention, FIG. 22 is anexploded perspective view illustrating a lens driving device accordingto a modification of the present invention, and FIG. 23 is a perspectiveview of bottom surface illustrating an assembly process of upper supportmember and a second driving portion of a lens driving device accordingto a modification of the present invention.

The lens driving apparatus (1000) may include a cover member (1100), abobbin (1200), a first driving portion (1300), a housing (1400), asecond driving portion (1500), a base (1600) and a support member (1700,1800). However, any one or more of the cover member (1100), the bobbin(1200), the first driving portion (1300), the housing (1400), the seconddriving portion (1500), the base (1600) and the support member (1700,1800) may be omitted from the lens driving apparatus (1000).

The lens driving apparatus (1000) according to the second exemplaryembodiment of the present invention may be applied to the dual cameramodule according to the first exemplary embodiment of the presentinvention. To be more specific, two lens driving apparatuses (1000)according to the second exemplary embodiment of the present inventionmay be applied to the dual camera module. At this time, as explained inthe first exemplary embodiment, two housings (1400), two bases (1600)and two cover members (1100) may be integrally formed in the two lensdriving apparatuses (1000) according to the second exemplary embodiment.However, two lens driving apparatuses (1000) may be separately disposedin parallel, each distanced from the other. At this time, a shield plateconfigured to shield the electromagnetic force may be interposed betweentwo lens driving apparatuses (1000).

The cover member (1100) may form an exterior look of lens drivingapparatus (1000). The cover member (1100) may take a bottom-opened cubicshape. However, the shape of the cover member (1100) of the presentinvention is not limited thereto. An inner space formed by the covermember (1100) and the base (1600) may be disposed with a bobbin (1200),a first driving portion (1300), a housing (1400), a second drivingportion (1500), and a support member (1700, 1800). Through thisconfiguration, the cover member (1100) can protect the inner elementsagainst the external shocks and prevent intrusion of external foreignobjects at the same time.

At least a portion of the cover member (1100) may be formed with a metalmaterial, for example. To be more specific, the cover member (1100) maybe formed with a metal plate. In this case, the cover member (1100) mayprevent an EMI (Electromagnetic Interference). That is, the cover member(1100) may prevent electric waves generated from outside of the covermember (1100) from entering an inside of the cover member (1100).Furthermore, the cover member (1100) may prevent electric wavesgenerated from inside of the cover member (1100) from being emitted tooutside of the cover member (1100). However, the material of covermember (1100) is not limited thereto.

The cover member (1100) may include an upper plate (1101), an externalplate (1102) and an internal plate (1103). The cover member (1100) mayinclude an upper plate (1101) forming an upper surface, an externalplate (1102) forming an external surface and an internal plate (1103)disposed on an inside to face the external plate (1102). The covermember (1100) may include an upper plate (1101), an external plate(1102) extended to a bottom side from an outside of the upper plate(1101). A bottom end of the external plate (1102) may be coupled to thebase (1600).

The internal plate (1103) may be formed by being extended to a bottomside from an inside of the upper plate (1101). The internal plate (1103)may be accommodated in an internal plate accommodating groove (1260) ofthe bobbin (1200) to prevent the bobbin (1200) from rotating. That is,the bobbin (1200) forming the internal plate accommodating groove (1260)and the internal plate (1103) may prevent the bobbin (1200) fromrotating by allowing the bobbin (1200) to be hitched. The internal plate(1103) may be formed at each four corner portion. However, the presentinvention is not limited thereto. A width of the internal plate (1103)may correspond to or may be smaller than a width of the internal plateaccommodating groove (1260).

The cover member (1100) may include an opening. The cover member (1100)may include an opening exposing the lens module by being formed at theupper plate (1101). The opening may be formed in a shape correspondingto that of the lens module. The size of opening may be formed greaterthan that of a diameter of the lens module in order to allow the lensmodule to be assembled through the opening. Furthermore, a lightintroduced through the opening may pass through the lens module.Meantime, the light having passed the lens module may be transmitted tothe image sensor.

The bobbin (1200) may be movably supported to the housing (1400). Thebobbin (1200) may perform an auto focusing function by moving to anoptical axis direction relative to the housing (1400). The bobbin (1200)may be in a state of being accommodated in the base (1600) under aninitial state where a coil of the first driving portion (1300) is notsupplied with a power. That is, the bobbin (1200) may be driven to asingle direction. To be more specific, the bobbin (1200) may perform anauto focusing function by moving to an upper side in response to powersupply in an initial state. At this time, the upper support member(1700) and/or the bottom support member (1800) may be so designed as toapply a pressure to the bobbin (1200) to a base (1600) side in aninitial state. This may be explained by offsetting a gap between anexternal portion (1710, 1810) of the upper support member (1700) and/orthe bottom support member (1800) versus an internal portion (1720,1820).

The bobbin (1200) may include a lens coupling portion (1210), a firstdriving portion coupling portion (1220), an upper side coupling portion(1230), a bottom side coupling portion (1240), a staircase portion(1250) and an internal plate accommodating groove (1260). However, anyone or more of the lens coupling portion (1210), the first drivingportion coupling portion (1220), the upper side coupling portion (1230),the bottom side coupling portion (1240), the staircase portion (1250)and the internal plate accommodating groove (1260) may be omitted orchanged from the bobbin (1200)

The bobbin (1200) may include a lens coupling portion (1210) coupled bythe lens module. The lens coupling portion (1210) may be coupled by thelens module. An inner circumferential surface of the lens couplingportion (1210) may be formed with a screw thread in a shapecorresponding to that of a screw thread formed at an outercircumferential surface of the lens module. That is, the outercircumferential surface of lens module may be screw-connected to theinner circumferential surface of the lens coupling portion (1210).Meantime, an adhesive may be injected into between the lens module andthe bobbin (1200). At this time, the adhesive may be an epoxy hardenedby UV or heat.

The bobbin (1200) may include a first driving portion coupling portion(1220) coupled by the first driving portion (1300). The first drivingportion coupling portion (1220) may be accommodated by the first drivingportion (1300). The first driving portion coupling portion (1220) may beintegrally formed with an external circumferential surface of bobbin(1200). Furthermore, the first driving portion coupling portion (1220)may be continuously formed along the external circumferential surface ofbobbin (1200) or spaced apart from the external circumferential surfaceof bobbin (1200) at a predetermined distance. The first driving portioncoupling portion (1220) may be formed by a portion of the externalcircumferential surface of bobbin (1200) being recessed.

The bobbin (1200) may include an upper side coupling portion (1230)coupled with an upper support member (1700). The upper side couplingportion (1230) may be coupled to an internal portion (1720) of the uppersupport member (1700). For example, a lug (not shown) of upper sidecoupling portion (1230) may be coupled by being inserted into a grooveor a hole (not shown) of the internal portion (1720). While the lug ofthe upper side coupling portion (1230) is inserted into the groove orthe hole of the internal portion (1720), the lug may be fused or bondedby an adhesive member to couple the upper support member (1700) to thebobbin (1200).

The bobbin (1200) may include a bottom side coupling portion (1240)coupled with the bottom support member (1800). The bottom side couplingportion (1240) may be coupled to an internal portion (1820) of thebottom support member (1800). For example, a lug (not shown) of thebottom side coupling portion (1240) may be coupled by being insertedinto a groove or a hole (not shown) of the internal portion (1820).).While the lug of the bottom side coupling portion (1240) is insertedinto the groove or the hole of the internal portion (1820), the lug maybe fused or bonded by an adhesive member to couple the bottom supportmember (1800) to the bobbin (1200).

An upper surface of bobbin (1200) may be formed with a staircase portion(1250) formed downwardly in a recessed manner. The staircase portion(1250) may be disposed by circumventing a circumference of an uppersurface of the bobbin (1200). The staircase portion (1250) may be soformed as not to interfere with an upper side portion (1410) of thehousing (1400) while the bobbin (1200) moves to an optical axisdirection (vertical direction). That is, the staircase portion (1250)can secure a moving space to an upper side of the bobbin (1200). Thestaircase portion (1250) may be formed at an upper surface of the bobbin(1200), and may be disposed on an area where the bobbin (1200) and theupper side portion (1410) of the housing (1400) are overlapped to anoptical axis direction. However, the present invention is not limitedthereto, and the staircase portion (1250) may be disposed on an areawhere the bobbin (1200) and the upper side portion (1410) of the housing(1400) are not overlapped to an optical axis direction.

The bobbin (1200) and the upper side portion (1410) of the housing(1400) may be so formed as to allow a maximum large area to beoverlapped to an optical axis direction in the second exemplaryembodiment of the present invention. In this case, a foreign object maybe introduced into a space between the housing (1400) and the bobbin tominimize a phenomenon of being introduced into the image sensor. Forexample, as illustrated in FIG. 20, the bobbin (1200) and the upper sideportion (1410) of the housing (1400) may be so overlapped as to preventa space between the housing (1400) and the upper side portion (1410)from being viewed when viewed from an upper side.

The staircase portion (1250) may be disposed with the upper supportmember (1700) in the second exemplary embodiment of the presentinvention. Thus, the upper support member (1700) in the second exemplaryembodiment may be disposed over a broader area than other exemplaryembodiments where the staircase portion (1250) is not formed. This meansthat the connection portion (1730) of the upper support member (1700)may be more lengthily formed with a broader width.

In general, an elastic member may be manufactured through an etchingprocess, where an etching tolerance may be about ±0.007 mm, for example.Furthermore, in case of glass photo mask, the etching tolerance may beabout ±0.003 mm. Meantime, when the width of the elastic member growsbroader, the stiffness of the elastic member may advantageously receiveless influence of tolerance. In order help understand this theory, whena width of elastic member is manufactured with 1 mm, for example, awidth of elastic member may be 1±0.007 mm when considered of tolerance,but when the width of elastic member is manufactured with 0.1 mm, thewidth of elastic member may be 0.1±0.007 mm when considered oftolerance. That is, when the width of the elastic member is made to bebroader, dispersion of stiffness becomes smaller, and in this case, itis advantageously easy to control the dispersion of start current andsensitivity of single direction driving lens driving apparatus (1000).

However, when the width of elastic member is broad, there is a need oflengthen the length of the elastic member in order to obtain the samestiffness as in where the width is narrow over where the width is broad.In light of the fact that an accommodatable area of the upper supportmember (1700) can be broadened by allowing the staircase portion (1250)to be disposed by circumventing a circumference of an upper surface atthe bobbin (1200) in the second exemplary embodiment, it is resultantlypossible to lengthen the upper support member (1700) with a broaderwidth. That is, the stiffness of the upper support member (1700) mayreceive less influence of tolerance in the second exemplary embodimentof the present invention. This means that dispersion of stiffness at theupper support member (1700) is reduced, such that it is advantageouslyeasy to control the dispersion of start current and sensitivity in thesecond exemplary embodiment of the present invention, as discussedabove.

The bobbin (1200) may include an internal plate reception groove (1260)into which at least one portion of the internal plate (1103) of thecover member (1100) can be accommodated. The internal plate receptiongroove (1260) may be formed at an upper surface of bobbin (1200). Theinternal plate reception groove (1260) may be formed by allowing aportion of the upper surface at the bobbin (1200) to be downwardlyrecessed. Recessed depth of the internal plate reception groove (1260)may be deeper than a recessed depth of staircase portion (1250). At thistime, the depth may be defined by a length toward a bottom side at anupper end of the bobbin (1200). Furthermore, an upper surface of thebobbin (1200) forming the internal plate reception groove (1260) may bedisposed on a bottom side over an upper surface of bobbin (1200) formingthe staircase portion (1250) while the bobbin (1200) is coupled to thehousing (1400). That is, the internal plate reception groove (1260) maytake a shape more downwardly recessed than the staircase portion (1250).The internal plate reception groove (1260) may be accommodated by aninternal plate (1103) of the cover member (1100), and the accommodatedinternal plate (1103) may be prevented from being rotated because ofbeing hitched at the bobbin (1200) forming the internal plate receptiongroove (1260). The internal plate reception groove (1260) may bedisposed on each of four (4) corner side, for example. However, thepresent invention is not limited thereto.

The first driving portion (1300) may be disposed on the bobbin (1200).The first driving portion (1300) may be fixed by being inserted into afirst driving portion coupling portion (1220) of bobbin (1200). Forexample, the first driving portion coupling portion (1220) may be formedby allowing a protruded portion to be disposed on an upper/bottom sidesof recessed area. At this time, a coil of the first driving portion(1300) may be directly wound on the first driving portion couplingportion (1220). Alternatively, as another example, the first drivingportion coupling portion (1220) may take an upper side or a bottom sideof the recessed area being opened, and may be formed by allowing ahitching portion to be formed at the other side, and the coil of thefirst driving portion (1300) may be coupled by being inserted through anopened area while being in a pre-wound state.

The first driving portion (1300) may include a coil. The coil of thefirst driving portion (1300) may be guided to the first driving portioncoupling portion (1220) to be wound on an external circumferentialsurface of the bobbin (1200). Furthermore, as another exemplaryembodiment, the coil may be also formed with four independent coils tobe disposed on the external circumferential surface of bobbin (1200),whereby adjacent coils may mutually form an angle of 90°. The firstdriving portion (1300) may be so disposed as to face the second drivingportion (1500). The first driving portion (1300) may over the bobbin(1200) to an optical axis direction relative to the housing (1400)through an electromagnetic interaction with the second driving portion(1500). The coil of the first driving portion (1300) may include a pairof lead cables (1301, 1302). The pair of lead cables (1301, 1302) mayreceive a current by being electrically connected to a pair of bottomsupport members (1801, 1802). When a current is supplied to the coil ofthe first driving portion (1300), the first driving portion (1300) maybe moved by electromagnetic interaction with magnets (1501, 1502) of thesecond driving portion (1500), and the bobbin (1200) coupled by thefirst driving portion (1300) may also be moved.

The housing (1400) may be disposed on an outside of the bobbin (1200).The housing (1400) may be opened at an upper side and a bottom side tomovably accommodate the bobbin (1200). An inner circumferential surfaceof the housing (1400) may be spaced apart from an externalcircumferential surface of the bobbin (1200). The housing (1400) may befixed to the base (1600), for example. However, in a modification, thehousing (1400) may be movably coupled to the base (1600) through alateral elastic member to move in order to perform the handshakecorrection function. The housing (1400) may be formed with an insulationmaterial, and may be manufactured with an injection-molded material inconsideration of productivity.

The housing (1400) may include an upper portion (1410), a lateralsupport portion (1420) and a lateral plate (1430). However, at least anyone or more of the upper portion (1410), the lateral support portion(1420) and the lateral plate (1430) may be omitted or changed from thehousing (1400).

The housing (1400) may include an upper portion (1410) supporting anupper surface of the second driving portion (1500). The upper portion(1410) may form an upper surface of housing (1400) to support an uppersurface of the second driving portion (1500). The upper portion (1410)may include, at an inside thereof, a through hole (1411). A lightincident through the through hole (1411) may be incident on the lensmodule. The upper portion (1410) may be overlapped on at least a portionwith the bobbin (1200) toward an optical axis direction. The upperportion (1410) may be formed in such a manner that a discrete spaceformed between an inner circumferential surface of the housing (1400)and an external circumferential surface of the bobbin (1200) is not seenwhen viewed from an upper side of the housing (1400). In this case, aphenomenon of foreign object being introduced through a discrete spacebetween the housing (1400) and the bobbin (1200) can be minimized.

The upper portion (1410) may function as a mechanical stopper relativeto the bobbin (1200). That is, the upper portion (1410) may not contactthe bobbin (1200) while moving by auto focusing function of the bobbin(1200), and may restrict a moving limit to an upper side direction ofthe bobbin (1200) when the bobbin (1200) moves by an external shock.Alternatively, the upper portion (1410) may function as a stoppercontacting the bobbin (1200) while moving by auto focusing function ofbobbin (1200). However, when the upper portion (1410) performs a stopperfunction relative to the bobbin (1200), there is a high probability ofgenerating a foreign object by being ground during reliability test, andtherefore, if necessary, a stopper portion may be also formed between aninternal plate (1103) of the cover member (1100) and the bobbin (1200).That is, a portion of an internal plate reception groove (1260) ofbobbin (1200) may contact an end of the internal plate (1103) of covermember (1100) to allow realizing a stopper function.

The upper portion (1410) may include four (4) corner portions, forexample. That is, a shape of the upper portion (1410) may berectangular. Each of the four corner portions at the upper portion(1410) may be disposed with a lateral support member (1420) extended toa bottom side.

The housing (1400) may include a lateral support portion (1420) extendeddownwardly from the upper portion (1410) to support a lateral surface ofthe second driving portion (1500). The lateral support portion (1420)may include first to fourth support portions (1421, 1422, 1423, 1424)extended downwardly from each of four corner portions of the upperportion (1410). At this time, the first support portion (1421) may beadjacent to the fourth support portion (1424) and the second supportportion (1422) and the third support portion (1423) may be adjacent tothe second support portion (1422) and the fourth support portion (1424).That is, the first to fourth support portions (1421, 1422, 1423, 1424)may be continuously arranged to a clockwise direction or to acounterclockwise direction.

A second driving portion (1500) may be interposed between the firstsupport portion (1421) and the second support portion (1422) and betweenthe third support portion (1423) and the fourth support portion (1424).Meantime, a lateral plate (1430) may be interposed between the secondsupport portion (1422) and the third support portion (1423) and betweenthe fourth support portion (1424) and the first support portion (1421).That is, two second driving portions (1500) and two lateral plates(1430) may be coupled to the lateral support portion (1420). At thistime, the two driving portions (1500) may face each other. Furthermore,two lateral plates (1430) may also face each other.

The lateral support portion (1420) may include a recess portion (1426)recessed from a bottom end of the lateral support portion (1420) to anupper side. The recess portion (1426) may be disposed with an extensionportion (1620) of the base (1600). The recess portion (1426) may beformed in a shape corresponding to that of the extension portion (1620).That is, the lateral support portion (1420) may be formed on at leastone portion thereof with a shape corresponding to that of the extensionportion (1620) of the base (1600). The lateral support portion (1420)may be further securely coupled by coupling between the recess portion(1426) and the extension portion (1620). Particularly, when the recessportion (1426) is disposed on an outside of the lateral support portion(1420), and when the extension portion (1620) is accommodated into therecess portion (1426), the extension portion (1620) may be resulted insupporting an outside of the lateral support portion (1420), whereby thehousing (1400) can be minimized of a phenomenon where the housing (1400)is detached to an outside direction even if there is an external shock.

The lateral support portion (1420) may include a coupling lug (1427)protrusively formed from a bottom end of the lateral support portion(1420) to a bottom side. The coupling lug (1427) may be protrusivelyformed from a bottom end of the lateral support portion (1420) to abottom side. The coupling lug (1427) may be accommodated into a couplinggroove (1630) of the base (1600). The coupling lug (1630) may befastened to a groove formed at an external portion (1810) of the bottomsupport portion (1800).

The lateral support portion (1420) may include a support end (1425)supporting a portion of an internal surface of the second drivingportion (1500). The support end (1425) may support a portion of theinternal surface of the second driving portion (1500) to prevent thesecond driving portion (1500) from being deviated into an inside.Furthermore, at least one portion of an internal surface at the supportend (1425) may support to allow being opened to an inside, whereby aninfluence is minimized to the electromagnetic interaction between thesecond driving portion (1500) and the first driving portion (1300).

The lateral plate (1430) may include a first plate (1431) integrallyformed with a second support portion (1422) and a third support portion(1423), and a second plate (1432) integrally formed with a fourthsupport portion (1424) and a first support portion (1421). The lateralplate (1430) may be integrally formed with the lateral support portion(1420) to thereby minimize a phenomenon where foreign objects areintroduced from a lateral side of the housing (1400). Meantime, as amodification, when the second driving portion (1500) is formed with fourpieces, the lateral plate (1430) may be omitted.

The second driving portion (1500) may be disposed to face the firstdriving portion (1300). The second driving portion (1500) can move thefirst driving portion (1300) through electromagnetic interaction withthe first driving portion (1300). The second driving portion (1500) mayinclude magnets. The second driving portion (1500) may include twomagnets, for example. The second driving portion (1500) may include afirst magnet (1501) and a second magnet (1502), for example, asillustrated in FIG. 16. At this time, the first magnet (1501) and thesecond magnet (1502) may be so disposed as to face each other. As notedhere, when two magnets are disposed, two surfaces of four lateralsurfaces of the housing (1400) may be disposed with the lateral plate(1430) to minimize a phenomenon where foreign objects are introducedfrom a lateral side of the housing (1400).

The second driving portion (1500) may include four magnets in amodification, as illustrated in FIG. 22. At this time, four magnets maybe disposed on the housing (1400) by being independently arranged toform 90° between adjacent two magnets. That is, each of the four magnetsis disposed on each lateral surface of four lateral corners of thehousing (1400) to promote an efficient use of internal volume.

The second driving portion (1500) may be disposed on the housing (1400).The second driving portion (1500) may be fixed by being inserted intothe housing (1400). To be more specific, an upper surface of the seconddriving portion (1500) may be supported to an upper portion (1410) ofthe housing (1400), and a lateral surface may be supported by thelateral support portion (1420) of the housing

(1400). Furthermore, a bottom surface of the second driving portion(1500) may be supported by the base (1600). An upper support member(1700) may be interposed between the second driving portion (1500) andthe upper portion (1410). An adhesive may be interposed between thesecond driving portion (1500) and the housing (1400) and/or the base(1600).

Meantime, as a modification, the first driving portion (1300) mayinclude magnets, and the second driving portion (1500) may include acoil.

The base (1600) may support a bottom side of the housing (1400). Thebase (1600) may be coupled with the housing (1400). The base (1600) maybe coupled with the cover member (1100). The base (1600) may be coupledwith an external plate (1102) of the cover member (1100). At least oneportion of the external surface at the base (1600) may contact an innersurface of external plate (1102) of the cover member (1100). A bottomend of the base (1600) may be formed with a lug protruded to an outsideto support a bottom end of the external plate (1102) of the cover member(1100).

The base (1600) may include a bottom portion (1610), an extensionportion (1620) and a coupling groove (1630). However, any one or more ofthe bottom portion (1610), the extension portion (1620) and the couplinggroove (1630) may be omitted or changed from the base (1600).

The base (1600) may include a bottom portion (1610) supporting thehousing (1400). The bottom portion (1610) may support a bottom end ofthe lateral support portion (1420) of the housing (1400). The bottomportion (1610) may include, at an inside, a through hole (1611). A lighthaving passed the lens module through the through hole (1611) may reachthe image sensor disposed on a bottom side of the base (1600). Thebottom portion (1610) may include, at a portion supporting the lateralsupport portion (1420) of housing (1400), a coupling groove (1630).Meantime, a bottom end of the lateral support portion (1420) may beformed with coupling lug (1427) inserted into the coupling groove(1630). The coupling lug (1427) may be coupled with a hole formed at theexternal portion (1810) of the bottom support member (1800). That is,the bottom support member (1800) may be interposed between a bottomportion (1610) of the base (1600) and the lateral support portion (1420)of the housing (1400). Meantime, the bottom support member (1800) may befixed by being coupled to the coupling lug (1427) of the lateral supportportion (1420) inserted into the coupling groove (1630) of the bottomportion (1610). The bottom portion (1610) may include a terminalreceptor (1612) formed by being recessed inwardly on the lateralsurface. The terminal receptor (1612) may accommodate a terminal portion(1811) of the bottom support member (1800).

The base (1600) may include an extension portion (1620) extended to anupper side in order to face the lateral support portion (1420). Theextension portion (1620) may be extended from the bottom portion (1610)to an upper side. The extension portion (1620) may be formed at each ofthe four corner portions of the bottom portion (1610). The extensionportion (1620) may be inserted into a recess portion (1426) of thelateral support portion (1420). For example, the recess portion (1426)may be formed at an outside of the lateral support portion (1420), andin this case, the extension portion (1620) may be inserted into therecess portion (1426) to support an external side of the lateral supportportion (1420) whereby the housing (1400) may be prevented from beingdisengaged to an external side of the base (1600).

The base (1600) may include a coupling groove (1630) accommodated by thecoupling lug (1427) of the lateral support portion (1420). The couplinggroove (1630) may be so formed as to correspond to the coupling lug(1427) in terms of shape. For example, the coupling lug (1427) may takea cylindrical shape, and the coupling groove (1630) may also take acorresponding shape. However, the present invention is not limitedthereto. The coupling groove (1630) may be formed at a portion of anarea contacted by the bottom portion (1610) of the base and the lateralsupport portion (1420) of the housing (1400). Meantime, the coupling lugmay be formed at the base (1600) and the coupling groove may be formedat a bottom end of the lateral support portion (1420).

The upper support member (1700) may be interposed between an upperportion (1410) of the housing (1400) and the second driving portion(1500). A portion of the upper support member (1700) may be fixed by acoupling force of the second driving portion (1500) coupled to thehousing (1400). Furthermore, a portion of the upper support member(1700) may be fixed to the housing (1400) and/or the second drivingportion (1500) by being adhered by an adhesive.

The upper support member (1700) may include an elastic member. That is,at least one portion of the upper support member (1700) may haveelasticity. In this case, the upper support member (1700) may be calledan upper elastic member. The upper support member (1700) may be a leafspring, for example. However, the present invention is not limitedthereto. At least one portion of the upper support member (1700) maytake a shape corresponding to that of the lateral support portion(1420), through which the upper support portion (1700) may accommodateat least one portion of the lateral support portion (1420). Meantime, inthis case, when an external force is applied to the upper supportportion (1700), the upper support portion (1700) may be prevented fromrotating by being hitched at the lateral support portion (1420).

The upper support member (1700) may include an external portion (1710),an internal portion (1720) and a connection portion (1730). The uppersupport member (1700) may include an external portion (1710) supportedby the housing (1400), an internal portion (1720) coupled with thebobbin (1200), and a connection portion (1730) connecting the externalportion (1710) and the internal portion (1720). At this time, theconnection portion (1730) of the upper support member (1700) may haveelasticity. It should be also apparent that the entire of the uppersupport member (1700) may have elasticity.

At least a portion of the upper support member (1700) may include anexternal portion (1710) interposed between the upper portion (1410) andthe second driving portion (1500). At least a portion of the externalportion (1710) may be interposed between the upper portion (1410) andthe second driving portion (1500). The external portion (1710) maysurface-contact the housing (1400) at one surface thereof, and maysurface-contact the second driving portion (1500) at the other surface.The external portion portion (1710) may be fixed between the seconddriving portion (1500) and the upper portion (1410) by a force coupledby the second driving portion (1500) to the housing (1400).

The external portion (1710) may include a first external terminal (1711)interposed between the first support portion (1421) and the secondsupport portion (1422), a second external terminal (1712) interposedbetween the second support portion (1422) and the third support portion(1423), a third external terminal (1713) interposed between the thirdsupport portion (1423) and the fourth support portion (1424) and afourth external terminal (1714) interposed between the fourth supportportion (1424) and the first support portion (1421).

The upper support member (1700) may include an internal portion (1720)coupled to an upper surface of bobbin (1200). The internal portion(1720) may be coupled to an upper surface of bobbin (1200). The internalportion (1720) may be formed with a hole, and the bobbin (1200) may beformed with a lug corresponding to the hole. The internal portion (1720)may be coupled to the bobbin (1200) by being fused by heat while the lugof the bobbin (1200) is inserted into the hole of the internal portion(1720). The internal portion (1720) may be connected to the externalportion (1710) through the connection portion (1730).

The internal portion (1720) may include a first internal terminal (1721)facing a first external terminal (1711), a second internal terminal(1722) facing a second external terminal (1712), a third internalterminal (1723) facing a third external terminal (1713) and a fourthinternal terminal (1724) facing a fourth external terminal (1714). Thatis, the internal portion (1720) may include a first internal terminal(1721) corresponding to between the first support portion (1421) and asecond support portion (1422), a second internal terminal (1722)corresponding to between the second support portion (1422) and the thirdsupport portion (1423), a third internal terminal (1723) correspondingto between the third support portion (1423) and the fourth supportportion (1424), and a fourth internal terminal (1724) corresponding tobetween the fourth support portion (1424) and the first support portion(1421).

The connection portion (1730) may include a first connection body (1731a) connecting between the second internal terminal (1722) and the thirdinternal terminal (1723) and the first external terminal (1711) asillustrated in FIG. 20, for example. Furthermore, the connection portion(1730) may further include a second connection body (1732 a) connectingbetween the third internal terminal (1723) and the fourth internalterminal (1724) and the second external terminal (1712). In this case,the second exterminal terminal (1712) may be fixed to the housing (1400)by an adhesive. Meantime, the first connection body (1731 a) and thesecond connection body (1732 a) illustrated in FIG. 20 can beascertained to be longer in length than a first connection body (1731 b)and a second connection body (1732 b) of FIG. 21, which aremodifications. That is, the first connection body (1731 a) and thesecond connection body (1732 a) illustrated in FIG. 20 are used with abroader width than the first connection body (1731 b) and the secondconnection body (1732 b) of FIG. 21, which are modifications, in orderto show the same stiffness as that of the the first connection body(1731 b) and the second connection body (1732 b) of FIG. 21. That is,there is an advantage of receiving less manufacturing error in theexemplary embodiment of FIG. 20.

The connection portion (1730) may include a first connection body (1731b) connecting between the first external terminal (1711) and the secondinternal terminal (1722), and a second connection body (1732 b)connecting the first external terminal (1711) and the fourth internalterminal (1724), as a modification, as illustrated in FIG. 21. In thiscase, the connection portion (1730) may not be directly connected to thesecond external terminal (1722). Meantime, this modification has anadvantage of dispensing with fixation of the second external terminal(1712) and the fourth external terminal (1714) to the housing (1400)using an adhesive, in comparison with an exemplary embodiment of FIG.20.

The adhesive (not shown) may be interposed between the external portion(1710) and the upper portion (1410). Alternatively, the adhesive may beinterposed between the external portion (1710) and the second drivingportion (1500). That is, the adhesive may be interposed between theexternal portion (1710) and the upper portion (1410) or between theexternal portion (1710) and the second driving portion (1500).

One portion of the bottom support member (1800) may be coupled to thehousing (1400) or to the base (1500), and the other portion may becoupled to a bottom surface of the bobbin (1200). One portion of thebottom support member (1800) may be fixed by the coupling lug (1427)disposed on a bottom end of the lateral support portion (1420) at thehousing (1400). One portion of the bottom support member (1800) may beinterposed between the lateral support portion (1420) of the housing(1400) and the base (1600). The bottom support member (1800) may movablysupport the bobbin (1200) relative to the housing (1400) and/or the base(1500). The bottom support member (1800) may be so formed as to apply apressure on the bobbin (1200) to a bottom side during an initial statewhere no current is applied to the first driving portion (1300).Furthermore, the upper support member (1700) may be so formed as toapply a pressure on the bobbin (1200) to a bottom side during an initialstate where no current is applied to the first driving portion (1300),whereby the bobbin (1200) can maintain a state of being contacted to thebase (1600) under the initial state. That is, an auto focusing functioncan be performed through a single direction driving according to thesecond exemplary embodiment of the present invention. The bottom supportmember (1800) may be formed in a pair of bottom support members (1801,802). The bottom support member (1800) may be formed with a pair, whereeach can be connected to the coil of the first driving portion (1300).

The bottom support member (1800) may include an elastic member, forexample. That is, at least one portion of the bottom support member(1800) may have elasticity. In this case, the bottom support member(1800) may be called a bottom elastic member. The bottom support member(1800) may be a leaf spring, for example. However, the present inventionis not limited thereto.

The bottom support member (1800) may include an external portion (1810),an internal portion (1820) and a connection portion (1830).

The bottom support member (1800) may include an external portion (1810)connected to any one or more of the housing (1400) and the base (1600).The external portion (1810) may be coupled to any one or more of thehousing (1400) and the base (1600). The external portion (1810) may befixed by a coupling lug (1427) at the lateral support portion (1420).The external portion (1810) may include a hole inserted by the couplinglug (1427) of the lateral support portion (1420).

Each of the pair of bottom support members (1801, 802) may include aterminal portion (1811) downwardly bent to be accommodated into aterminal receptor (1612) of the base (1600). The terminal portion (1811)may be extended by being bent from the external portion (1810). At leastone portion of the terminal portion (1811) may be accommodated into theterminal receptor (1612) of the base (1600). The terminal portion (1811)may be applied with a banding spring terminal manufactured by bandingmethod.

The bottom support member (1800) may include an internal portion (1820)coupled to the bobbin (1200). The internal portion (1820) may be coupledto the bobbin (1200). The internal portion (1820) may include a hole andthe bobbin (1200) may include a lug. In this case, the hole of internalportion (1820) may be coupled by being inserted by the lug of the bobbin(1200). The internal portion (1820) may be coupled and bonded by heat tothe bobbin (1200) while the hole of the internal portion (1820) isinserted with the lug of the bobbin (1200).

The bottom support member (1800) may include a connection portion (1830)connecting the external portion (1810) and the internal portion (1820).The connection portion (1830) may include an external portion (1810) andan internal portion (1820). The connection portion (1830) may haveelasticity. It should be apparent that the external portion (1810), theinternal portion (1820) and the connection portion (1830) all have theelasticity.

The second exemplary embodiment and the modification may be such thatassembling of housing assembly can be performed by a process where thecover member (1100) is accommodated, the housing (1400) is disposedinside the cover member (1100) as illustrated in FIG. 23(a), the uppersupport member (1700) is accommodated on the housing (1400) asillustrated in FIG. 23(b), and the magnet of the second driving portion(1500) is fastened as illustrated in FIG. 23(c).

The second exemplary embodiment of the present invention has anadvantage over the prior art because of elimination of a fixing processsuch as a bonding or fusing process for fixing the upper support member(1700) to the housing (1400). Furthermore, there is another advantage inthe second exemplary embodiment of the present invention in thatassembly is easy over a case of assembling the housing (1400) at alateral side because the magnet can be assembled at a vertical directionof the housing (1400).

In the second exemplary embodiment of the present invention, magnets arepositioned only at two lateral surfaces out of four lateral surfaces ofthe housing (1400) and the other remaining two lateral surfaces arepositioned with the lateral plates (1430), for example, to therebyreduce a risk of being introduced with foreign objects to the lateralsurface of the housing (1400).

Meantime, as an example, when the upper support member (1700) is used asshown in FIG. 20, the length of the upper support member (1700) can beextended and the width can be broadly utilized to thereby minimize theinfluence of stiffness caused by manufacturing tolerance. Furthermore,as a modification, when the upper support member (1700) is used asillustrated in FIG. 21, the external portion (1810) not directlyconnected by the connection portion (1830) may be advantageouslydispensed with the bonding process in which the external portion (1810)is separately bonded to the housing (1400).

The inner diameter of the housing (1400) may be made to be smaller thanthe external diameter of the bobbin (1200) to minimize the infiltrationof foreign objects into an upper side according to the second exemplaryembodiment of the present invention.

Furthermore, the manufacturing personnel employed for housing assemblycan be reduced to a total of six people according to the secondexemplary embodiment of the present invention. That is, the housingassembly can be accomplished by employing one person for accommodationof cover member (1100), one person for accommodation of housing (1400),one person for accommodation of upper support member (1700), one personfor coating bond, one person for assembly of magnet, and one person foradditional coating of bond. Furthermore, the second exemplary embodimentof the present invention can expect advantageous effects of reducing thejig cost over the prior art, reducing the manufacturing cost of housing(1400) and the magnets over the prior art and reducing the sub assemblydefect loss over the prior art.

Although the present invention has been explained with all constituentelements forming the exemplary embodiments of the present disclosurebeing combined in one embodiment, or being operated in one embodiment,the present disclosure is not limited thereto. That is, in some cases,the described features, structures, or operations may be combined in anysuitable manner in one or more embodiments. It will also be readilyunderstood that the components of the embodiments, as generallydescribed and illustrated in the figures herein, could be arranged anddesigned in a wide variety of different configurations.

Terms used in the specification are only provided to illustrate theembodiments and should not be construed as limiting the scope and spiritof the present disclosure. In the specification, a singular form ofterms includes plural forms thereof, unless specifically mentionedotherwise. In the term “includes”, “including”, “comprises” and/or“comprising” as used herein, the mentioned component, step, operationand/or device is not excluded from presence or addition of one or moreother components, steps, operations and/or devices.

Unless otherwise defined, all terms including technical and scientificterms used herein have the same meaning as commonly understood by one ofordinary skill in the art to which this invention belongs. It will befurther understood that terms, such as those defined in commonly useddictionaries, should be interpreted as having a meaning that isconsistent with their meaning in the context of the relevant art and thepresent disclosure, and will not be interpreted in an idealized oroverly formal sense unless expressly so defined herein.

Although embodiments have been described with reference to a number ofillustrative embodiments thereof, it should be understood that numerousother modifications and embodiments can be devised by those skilled inthe art that will fall within the spirit and scope of the principles ofthis disclosure. More particularly, various variations and modificationsare possible in the component parts and/or arrangements of the subjectcombination arrangement within the scope of the disclosure, the drawingsand the appended claims.

Although the abovementioned embodiments according to the presentinvention have been described in detail with reference to the abovespecific examples, the embodiments are, however, intended to beillustrative only, and thereby do not limit the scope of protection ofthe present invention. Thereby, it should be appreciated by the skilledin the art that changes, modifications and amendments to the aboveexamples may be made without deviating from the scope of protection ofthe invention.

1. A dual camera module, comprising: a substrate; a first image sensordisposed on the substrate; a second image sensor disposed on thesubstrate while being spaced apart from the first image sensor; ahousing disposed above the substrate; a first bobbin disposed above thefirst image sensor in the housing; a second bobbin disposed above thesecond image sensor in the housing; a first coil disposed on the firstbobbin; a second coil disposed on the second bobbin; and a first magnetdisposed between the first coil and the second coil and facing the firstcoil and the second coil.
 2. The dual camera module of claim 1, whereinthe housing comprises a partition wall dividing an inner space of thehousing to a first space and a second space, and wherein the firstbobbin is disposed on the first space and the second bobbin is disposedon the second space.
 3. The dual camera module of claim 2, wherein thefirst magnet is so arranged as to overlap with the partition wall to anoptical axis direction.
 4. The dual camera module of claim 2, whereinthe housing further comprises a first magnet accommodation portiondisposed on a bottom side of the partition wall to accommodate the firstmagnet, and wherein the first magnet accommodation portion is of abottom-opened type.
 5. The dual camera module of claim 1, furthercomprising: a second magnet disposed on the housing and facing the firstcoil; and a third magnet disposed on the housing and facing the secondcoil, wherein the housing comprises a second magnet accommodationportion penetratingly formed at a lateral surface in an inner-outer sideopened type to accommodate the second magnet, and a third magnetaccommodation portion penetratingly formed at a lateral surface in aninner-outer side opened type to accommodate the third magnet.
 6. Thedual camera module of claim 1, further comprising: a second magnetdisposed on the housing to face the first magnet; and a third magnetdisposed on the housing to face the second coil, wherein the housingcomprises a second magnet accommodation portion formed at a lateralsurface in a bottom side opened type to accommodate the second magnet,and a third magnet accommodation portion formed at a lateral surface ina bottom side opened type to accommodate the third magnet.
 7. The dualcamera module of claim 1, further comprising a first elastic membercoupled to the second bobbin and the housing, and wherein the elasticmember is integrally formed.
 8. The dual camera module of claim 7,further comprising a second elastic member coupled to the first bobbinand the housing; and a third elastic member coupled to the second bobbinand the housing, wherein the second elastic member is divided to a pairto be electrically connected to the first coil, and wherein the thirdelastic member is divided to a pair to be electrically connected to thesecond coil.
 9. The dual camera module of claim 1, further comprising abase disposed between the substrate and the housing and integrallyformed, wherein the base comprises a first opening portion correspondingto the first bobbin and a second opening portion corresponding to thesecond bobbin.
 10. The dual camera module of claim 9, wherein a bottomsurface of the base is formed with a partition wall interposed betweenthe first opening portion and the second opening portion to protrusivelyformed to a bottom side, and wherein the partition wall is extended froma lateral side of one side of the bottom surface of the base to alateral side of the other side.
 11. The dual camera module of claim 1,further comprising a cover member accommodating the housing at an insideand integrally formed, wherein the cover member comprises a firstthrough hole corresponding to the first bobbin and a second through holecorresponding to the second bobbin.
 12. The dual camera module of claim5, wherein an inner lateral surface of the second magnet and an innerlateral surface of the third magnet have a mutually different polarity.13. The dual camera module of claim 1, wherein the first magnetcomprises mutually-separated two magnets, and a shield plate shieldingan electromagnetic force is disposed between the two magnets.
 14. Thedual camera module of claim 13, wherein an inner lateral surface of thesecond magnet and an inner lateral surface of the third magnet have amutually same polarity.
 15. An optical device including a main body, adual camera module disposed on the main body to photograph an image of asubject and a display portion disposed on one surface of the main bodyto output the image photographed by the dual camera module, wherein thedual camera module comprises: a substrate; a first image sensor disposedon the substrate; a second image sensor disposed on the substrate whilebeing spaced apart from the first image sensor; a housing disposed abovethe substrate; a first bobbin disposed above the first image sensor inthe housing; a second bobbin disposed above the second image sensor inthe housing; a first coil disposed on the first bobbin; a second coildisposed on the second bobbin; and a first magnet disposed between thefirst coil and the second coil and facing the first coil and the secondcoil.